Read I&M data from profibus slave with RDREC

Hi

thanks for your help.

I have found the soloution now. (by reading an ABB manual)  :-)(ABB_EN_FPBA01_UM_E_screenres.pdf)

I made a Write request with SFB53 and then reading with SFB52 - using index 255 (not 0xAFF0 or 47)

L     14037 // My device
T     #Data_rcv.ID
T     #Data_Send.ID

// #1 byte Extended function number
L     B#16#8
T     #Send.Request_ref
// #2 byte reserved
L     B#16#0
T     #Send.Request_ID
// #3+4 byte FI_Index d_65000 = 0xFDE8 I&M 0
L     B#16#FD
T     #Send.Axis
L     B#16#E8
T     #Send.Number_of_par
// #5 to +64 #69 byte only write
L     B#16#0
T     #Send.Attribute
L     B#16#0
T     #Send.Number_of_elements

CALL  #Skriv
REQ   :=#Data_Send.req
ID    :=#Data_Send.ID
INDEX :=255
LEN   :=4
DONE  :=#Data_Send.done
BUSY  :=#Data_Send.busy
ERROR :=#Data_Send.error
STATUS:=#Data_Send.Status
RECORD:=#Send

SET
A     #Data_Send.error
JCN   ssss
L     #Data_Send.Status

ssss: A     #Data_Send.req
A(
O     #Data_Send.done
//  O     #Data_Send.busy
O     #Data_Send.error
)
R     #Data_Send.req
S     #Data_rcv.req

// SFB52
CALL  #Read_1
REQ   :=#Data_rcv.req
ID    :=#Data_rcv.ID
INDEX :=255
MLEN  :=200
VALID :=#Data_rcv.valid
BUSY  :=#Data_rcv.busy
ERROR :=#Data_rcv.error
STATUS:=#Data_rcv.Status
LEN   :=#Data_rcv.LEN
RECORD:=#Record

SET
A     #Data_rcv.req
R     #Data_rcv.req

A     #Data_rcv.error
JCN   END
L     #Data_rcv.Status

END:  BEU

Hello,

I was not really helpful to you, simply I was think only for check that sugested value from your partner. In case of not functional, then you need find other solution. Glad that you've found solution.

Duris_I

Hello,

I was not really helpful to you, simply I was think only for check that sugested value from your partner. In case of not functional, then you need find other solution. Glad that you've found solution.

Hi Duris_I

Eventhough your input did not solve my problem, I appriciate it very much that you and others are taking your time to try and help.  And I hope, by posting the soloution, others can benefit from my effort in this matter.

Søren Friis Autzen

Hi Sir :

I have the same problem with SFB 52, my CPU is S7-300 and I use STEP 7 to program.

The vendor ID of My profinet IO device is 0x0E and device ID is 0x1234, index is 1234.

When I download PLC program to CPU, the BF LED always turns on, could you give me some

suggestion?

Best regards,

Marcus

Hi

if the BF LED is lit, then you need to check that IO communication is active to the node.

Is the node online ?

/søren

Hi Sir :

Thanks for your reply!

I try to remove SFB52 and download program to PLC.

After doing that, the BF LED turns off, so I think the problem is SFB52.

Best regards,

Marcus